1-Bromo-2-methylpropane → HCID 54578469, compound

HRID 2171199Notes

Reaction equation

HRID 2171199 reaction equation
[CH:1]1([CH2:4][O:5][C:6]2[C:7]([OH:24])=[C:8]([C:14]3[CH:15]=[C:16]4[C:20](=[CH:21][CH:22]=3)[C:19](=[O:23])[O:18][CH2:17]4)[CH:9]=[CH:10][C:11]=2[O:12][CH3:13])[CH2:3][CH2:2]1.C(=O)([O-])[O-].[K+].[K+].[CH2:31](Br)[CH:32]([CH3:34])[CH3:33]>C(#N)C>[CH:1]1([CH2:4][O:5][C:6]2[C:7]([O:24][CH2:31][CH:32]([CH3:34])[CH3:33])=[C:8]([C:14]3[CH:15]=[C:16]4[C:20](=[CH:21][CH:22]=3)[C:19](=[O:23])[O:18][CH2:17]4)[CH:9]=[CH:10][C:11]=2[O:12][CH3:13])[CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 65551-Bromo-2-methylpropaneHCID 11430Potassium CarbonateHCID 67465720HCID 67465720, compound

Product 1

HCID 54578469HCID 54578469, compoundYield 21.3%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
70 °C

Procedure

To a stirring solution of 5-(3-(cyclopropylmethoxy)-2-hydroxy-4-methoxyphenyl) isobenzofuran-1(3H)-one (80 mg, 0.246 mmol) in acetonitrile (10 mL) was added potassium carbonate (102 mg, 0.745 mmol) and isobutylbromide (102 mg, 0.745 mmol) and the resultant reaction mixture was heated to 70° C. for 16 h. The reaction mixture was cooled to RT and filtered through celite. The filtrate was concentrated under reduced pressure and the residue was purified by column chromatography (silica gel, 0-20% ethyl acetate in pet ether) to afford the title compound as a solid (20 mg, 21%).

Workup

  1. customthe resultant reaction mixture
  2. temperatureThe reaction mixture was cooled to RT
  3. filtrationfiltered through celite
  4. concentrationThe filtrate was concentrated under reduced pressure
  5. customthe residue was purified by column chromatography (silica gel, 0-20% ethyl acetate in pet ether)

Sources & evidence

ORD record
ord-290df39faa8c420d8964bffe770a1e2f
Source dataset
uspto-grants-2015_06
Patent number
US09051290B2

Reaction notes

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